TOKYO -- Tokyo is darker at night now than in 2019 before COVID-19 ravaged the city's entertainment districts. Nighttime satellite images show the city last year had luminosity only 90% that of 2019, while Paris and London had fully regained their glow.
Based on NASA satellite image data processed by Colorado School of Mines, a research university in the U.S., Nikkei has calculated nighttime brightness in various cities during the April-October period of 2022. Data showed that illumination levels increased 3.2% in Paris and 1.4% in London from 2019 averages, but fell 3.2% in New York and 11.6% in Tokyo.
